

Crossing Hurdles
SQL Developer | $100/hr Remote | Mercor
β - Featured Role | Apply direct with Data Freelance Hub
This role is for an SQL Developer at Mercor, offering $100/hr for a flexible, remote contract. Requires strong Database Administrator experience, expert SQL skills, and familiarity with compliance standards. Ideal candidates should excel in performance tuning and data integrity management.
π - Country
United States
π± - Currency
$ USD
-
π° - Day rate
800
-
ποΈ - Date
November 21, 2025
π - Duration
Unknown
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ποΈ - Location
Remote
-
π - Contract
Unknown
-
π - Security
Unknown
-
π - Location detailed
United States
-
π§ - Skills detailed
#"ETL (Extract #Transform #Load)" #Data Extraction #Database Infrastructure #Indexing #Statistics #Data Quality #Documentation #DBA (Database Administrator) #SQL Queries #PostgreSQL #Security #MySQL #AI (Artificial Intelligence) #SQL Server #Data Integrity #Compliance #SQL (Structured Query Language) #Schema Design #Datasets
Role description
At Crossing Hurdles, we work as a referral partner. We refer candidates to Mercor that collaborates with the worldβs leading AI research labs to build and train cutting-edge AI models.
Organization: Mercor
Position: Database Administrators
Referral partner: Crossing Hurdles
Type: Hourly contract
Compensation: $75β$100 per hour
Location: Remote
Commitment: 10β40 hours/week, flexible and asynchronous
Duration: Flexible
Role Responsibilities:
β’ Design and optimize complex SQL queries using EXPLAIN plans and indexing strategies.
β’ Implement schema changes with CREATE/ALTER statements and rollback planning.
β’ Configure and validate automated backup and restoration procedures.
β’ Manage user roles and permissions following defined security policies.
β’ Export/import data between systems with validation checks and encoding integrity.
β’ Execute data quality checks and report violations with remediation scripts.
β’ Apply statistics updates, manage transaction logs, and test failover recovery.
β’ Perform compliance data extractions, patching, and system audits for enterprise use cases.
β’ Document processes and performance findings in clear, reproducible formats.
Ideal Qualifications:
β’ Strong experience as a Database Administrator working in production environments.
β’ Expert-level SQL skills and proficiency with PostgreSQL, MySQL, and/or SQL Server.
β’ Strong background in performance tuning, security, data integrity, and schema design.
β’ Familiarity with compliance standards (e.g., SOX), data export formats, and backup tooling.
β’ Comfortable handling large datasets, interpreting execution plans, and managing database infrastructure end-to-end.
β’ Ability to produce production-quality scripts and documentation for technical audiences.
Application Process (Takes 20 min):
β’ Submit your resume
β’ AI interview based on your resume (15 min)
β’ Submit form
At Crossing Hurdles, we work as a referral partner. We refer candidates to Mercor that collaborates with the worldβs leading AI research labs to build and train cutting-edge AI models.
Organization: Mercor
Position: Database Administrators
Referral partner: Crossing Hurdles
Type: Hourly contract
Compensation: $75β$100 per hour
Location: Remote
Commitment: 10β40 hours/week, flexible and asynchronous
Duration: Flexible
Role Responsibilities:
β’ Design and optimize complex SQL queries using EXPLAIN plans and indexing strategies.
β’ Implement schema changes with CREATE/ALTER statements and rollback planning.
β’ Configure and validate automated backup and restoration procedures.
β’ Manage user roles and permissions following defined security policies.
β’ Export/import data between systems with validation checks and encoding integrity.
β’ Execute data quality checks and report violations with remediation scripts.
β’ Apply statistics updates, manage transaction logs, and test failover recovery.
β’ Perform compliance data extractions, patching, and system audits for enterprise use cases.
β’ Document processes and performance findings in clear, reproducible formats.
Ideal Qualifications:
β’ Strong experience as a Database Administrator working in production environments.
β’ Expert-level SQL skills and proficiency with PostgreSQL, MySQL, and/or SQL Server.
β’ Strong background in performance tuning, security, data integrity, and schema design.
β’ Familiarity with compliance standards (e.g., SOX), data export formats, and backup tooling.
β’ Comfortable handling large datasets, interpreting execution plans, and managing database infrastructure end-to-end.
β’ Ability to produce production-quality scripts and documentation for technical audiences.
Application Process (Takes 20 min):
β’ Submit your resume
β’ AI interview based on your resume (15 min)
β’ Submit form






